GUAYNABO, PUERTO RICO- Former world champions Ivan "Iron Boy" Calderon and Raul "Rayito" Garcia will collide on October 29 at the Coliseo Mario "Quijote" Morales in Guyanabo, Puerto Rico, along with former world champions Wilfredo Vazquez Jr. and Carlos “El Indio” Quintana as part of the 24th WBO Annual Convention to be held in the island from October 24 to October 29.